EP 3765433 B1 20240207 - PROCESS FOR THE PRODUCTION OF ETHYLENE GLYCOL
Title (en)
PROCESS FOR THE PRODUCTION OF ETHYLENE GLYCOL
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ETHYLENGLYCOL
Title (fr)
PROCÉDÉ DE PRODUCTION D'ÉTHYLÈNE GLYCOL
Publication
Application
Priority
- NL 2020583 A 20180314
- EP 2019056518 W 20190314
Abstract (en)
[origin: WO2019175369A1] A process for the production of ethylene glycol including the steps of: (i) providing, to a first reactor, a carbohydrate source, a solvent, hydrogen, a first heterogeneous catalyst, which first heterogeneous catalyst contains one or more transition metals from groups 8, 9 and 10 of the Periodic Table of the Elements, and a homogeneous catalyst, which homogeneous catalyst contains tungsten; (ii) reacting, in the first reactor, at a temperature in the range from equal to or more than 170°C to equal to or less than 270 °C, at least a portion of the carbohydrate source in the presence of the hydrogen, the solvent, the first heterogeneous catalyst and the homogeneous catalyst; (iii) removing, from the first reactor, a first reactor product stream and separating from such first reactor product stream at least: - one ethylene glycol rich fraction; and - one sorbitol-rich fraction containing concentrated homogeneous catalyst; (iv) providing, to a second reactor, hydrogen and at least part of the sorbitol-rich fraction, containing concentrated homogeneous catalyst; (v) reacting, in the second reactor, at a temperature in the range from equal to or more than 200°C to equal to or less than 300°C, at least a part of the sorbitol-rich fraction, containing concentrated homogeneous catalyst, in the presence of the hydrogen, a second heterogeneous catalyst, which second heterogeneous catalyst contains one or more transition metals from groups 8, 9 and 10 of the Periodic Table of the Elements; (vi) removing, from the second reactor, a second reactor product stream.
IPC 8 full level
C07C 29/132 (2006.01); C07C 31/20 (2006.01); C07C 31/26 (2006.01)
CPC (source: EP US)
B01J 23/30 (2013.01 - US); C07C 29/132 (2013.01 - EP US); C07C 31/202 (2013.01 - US); Y02P 20/52 (2015.11 - EP)
C-Set (source: EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2019175369 A1 20190919; BR 112020016904 A2 20201215; CN 111868018 A 20201030; CN 111868018 B 20230804; EA 202092099 A1 20201126; EP 3765433 A1 20210120; EP 3765433 B1 20240207; LT 3765433 T 20240425; PL 3765433 T3 20240527; US 11008269 B2 20210518; US 2021040022 A1 20210211
DOCDB simple family (application)
EP 2019056518 W 20190314; BR 112020016904 A 20190314; CN 201980018830 A 20190314; EA 202092099 A 20190314; EP 19715402 A 20190314; LT EP2019056518 T 20190314; PL 19715402 T 20190314; US 201916977758 A 20190314